1 /* 2 * Copyright (c) 2012-2015 Etnaviv Project 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sub license, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the 12 * next paragraph) shall be included in all copies or substantial portions 13 * of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21 * DEALINGS IN THE SOFTWARE. 22 * 23 * Authors: 24 * Wladimir J. van der Laan <laanwj (at) gmail.com> 25 */ 26 27 #include "etnaviv_tiling.h" 28 29 #include <stdint.h> 30 #include <stdio.h> 31 32 #define TEX_TILE_WIDTH (4) 33 #define TEX_TILE_HEIGHT (4) 34 #define TEX_TILE_WORDS (TEX_TILE_WIDTH * TEX_TILE_HEIGHT) 35 36 #define DO_TILE(type) \ 37 src_stride /= sizeof(type); \ 38 dst_stride = (dst_stride * TEX_TILE_HEIGHT) / sizeof(type); \ 39 for (unsigned srcy = 0; srcy < height; ++srcy) { \ 40 unsigned dsty = basey + srcy; \ 41 unsigned ty = (dsty / TEX_TILE_HEIGHT) * dst_stride + \ 42 (dsty % TEX_TILE_HEIGHT) * TEX_TILE_WIDTH; \ 43 for (unsigned srcx = 0; srcx < width; ++srcx) { \ 44 unsigned dstx = basex + srcx; \ 45 ((type *)dest)[ty + (dstx / TEX_TILE_WIDTH) * TEX_TILE_WORDS + \ 46 (dstx % TEX_TILE_WIDTH)] = \ 47 ((type *)src)[srcy * src_stride + srcx]; \ 48 } \ 49 } 50 51 #define DO_UNTILE(type) \ 52 src_stride = (src_stride * TEX_TILE_HEIGHT) / sizeof(type); \ 53 dst_stride /= sizeof(type); \ 54 for (unsigned dsty = 0; dsty < height; ++dsty) { \ 55 unsigned srcy = basey + dsty; \ 56 unsigned sy = (srcy / TEX_TILE_HEIGHT) * src_stride + \ 57 (srcy % TEX_TILE_HEIGHT) * TEX_TILE_WIDTH; \ 58 for (unsigned dstx = 0; dstx < width; ++dstx) { \ 59 unsigned srcx = basex + dstx; \ 60 ((type *)dest)[dsty * dst_stride + dstx] = \ 61 ((type *)src)[sy + (srcx / TEX_TILE_WIDTH) * TEX_TILE_WORDS + \ 62 (srcx % TEX_TILE_WIDTH)]; \ 63 } \ 64 } 65 66 void 67 etna_texture_tile(void *dest, void *src, unsigned basex, unsigned basey, 68 unsigned dst_stride, unsigned width, unsigned height, 69 unsigned src_stride, unsigned elmtsize) 70 { 71 if (elmtsize == 4) { 72 DO_TILE(uint32_t) 73 } else if (elmtsize == 2) { 74 DO_TILE(uint16_t) 75 } else if (elmtsize == 1) { 76 DO_TILE(uint8_t) 77 } else { 78 printf("etna_texture_tile: unhandled element size %i\n", elmtsize); 79 } 80 } 81 82 void 83 etna_texture_untile(void *dest, void *src, unsigned basex, unsigned basey, 84 unsigned src_stride, unsigned width, unsigned height, 85 unsigned dst_stride, unsigned elmtsize) 86 { 87 if (elmtsize == 4) { 88 DO_UNTILE(uint32_t); 89 } else if (elmtsize == 2) { 90 DO_UNTILE(uint16_t); 91 } else if (elmtsize == 1) { 92 DO_UNTILE(uint8_t); 93 } else { 94 printf("etna_texture_tile: unhandled element size %i\n", elmtsize); 95 } 96 } 97
